PDF malware analysis — malicious · 149fc2ba6f4472f4

MALICIOUS

PDF

31.6 KB Created: 2021-07-19 11:03:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12

MD5: a900f1a7cf3154d0f1a40c42e0301bd9 SHA-1: 4810c4072738bd34298016ba399941f01244103a SHA-256: 149fc2ba6f4472f4f261cbc4da44ea498bbe1ce5b6d12cc247c77f153424eeef

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirector infrastructure, specifically advertising 'free generators' or 'game hacks' for popular games. The primary lure URL is http://netcdn.tw/app/479516143/is-minecraft-free-on-ps4-game-hack, which is associated with a critical heuristic firing. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially malicious websites, likely for credential harvesting or further malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9469

Heuristics 4

PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://netcdn.tw/app/479516143/is-minecraft-free-on-ps4-game-hack In PDF document text
- https://www.kofordconverting.com/uploaded_files/userfiles/files/minecraft-mac-free_GM479516143.pdfIn PDF document text
- https://www.kofordconverting.com/uploaded_files/userfiles/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
- https://www.kofordconverting.com/uploaded_files/userfiles/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
- https://www.kofordconverting.com/uploaded_files/userfiles/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.kofordconverting.com/uploaded_files/userfiles/files/free-tiktok-fans-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
- https://www.kofordconverting.com/uploaded_files/userfiles/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.kofordconverting.com/uploaded_files/userfiles/files/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00002a4c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2A4C	22236 bytes
SHA-256: `59b439ba2e319f3fa17b9914260f2e4695a4033f2339a43185d1b46932c8b575`
`font_01_sfnt_off00005b1a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5B1A	17784 bytes
SHA-256: `6bdb79261e2e18097973e8a24e5f78e76fe24063bf06913bb75cbf544b02b3c5`

Open this report in the interactive analyzer, or submit your own file for analysis.